Sensor apparatus using an electrochemical cell
- 1309 Gatewood Dr., Apt. 1703, Auburn, AL 36830
A novel technology for sensing mechanical quantities such as force, stress, strain, pressure and acceleration has been invented. This technology is based on a change in the electrochemically generated voltage (electromotive force) with application of force, stress, strain, pressure or acceleration. The change in the voltage is due to a change in the internal resistance of the electrochemical cell with a change in the relative position or orientation of the electrodes (anode and cathode) in the cell. The signal to be detected (e.g. force, stress, strain, pressure or acceleration) is applied to one of the electrodes to cause a change in the relative position or orientation between the electrodes. Various materials, solid, semisolid, gel, paste or liquid can be utilized as the electrolyte. The electrolyte must be an ion conductor. The examples of solid electrolytes include specific polymer conductors, polymer composites, ion conducting glasses and ceramics. The electrodes are made of conductors such as metals with dissimilar electronegativities. Significantly enhanced sensitivities, up to three orders of magnitude higher than that of comparable commercial sensors, are obtained. The materials are substantially less expensive than commercially used materials for mechanical sensors.
- Research Organization:
- Univ. of Alabama, Tuscaloosa, AL (US)
- DOE Contract Number:
- FC02-91ER75678
- Assignee:
- Thakur; Mrinal (1309 Gatewood Dr., Apt. 1703, Auburn, AL 36830)
- Patent Number(s):
- US 6448621
- OSTI ID:
- 874721
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
apparatus
electrochemical
cell
novel
technology
sensing
mechanical
quantities
force
stress
strain
pressure
acceleration
invented
based
change
electrochemically
generated
voltage
electromotive
application
due
internal
resistance
position
orientation
electrodes
anode
cathode
signal
detected
applied
materials
solid
semisolid
paste
liquid
utilized
electrolyte
conductor
examples
electrolytes
specific
polymer
conductors
composites
conducting
glasses
ceramics
metals
dissimilar
electronegativities
significantly
enhanced
sensitivities
magnitude
comparable
commercial
sensors
obtained
substantially
expensive
commercially
electrochemical cell
solid electrolyte
polymer composite
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